an indication or sign of what is to happen, especially of something momentous or calamitous
a warning or omen, especially a bad omen
An omen or sign of something to come manifested in accordance to a resonance with persisting energy; from the Eight House or Eight Mansions method. Each of the eight outer sectors of the Bagua has a portent depending on the gua calculation for the person or building it is being related to. Each portent has an auspicious or inauspicious association. This association is determined by the pattern of the changing lines of the trigram contained within that sector.